The incident made it impossible for HUSD to provide regular morning bus service to schools Monday, May 11, according to Dan Streeter, HUSD Assistant Superintendent of Operations.

Schools opened on time, but students had to make their own arrangements to get to school, he said. The district expected to be able to provide transportation home at the end of the day.

"In many cases, there was air let out of tires," Streeter said, on about 60 buses. Drivers discovered the vandalism as they began to arrive at about 4:30 a.m. Monday, he added.

"We have not found, to this point, any permanent damage" to the tires, he said.

There are security cameras monitoring the area the buses are parked, and Streeter said, and the district and Prescott Valley police will review videotape to establish when the incidents occurred and whether any suspects can be identified.

The incident was more far-reaching than getting students to class Monday morning, "Field trips for Monday were canceled, classified employees sent home without pay and families were left scrambling figuring out how to get their kids to school by this vandalism" Streeter said.